John Deere Yanmar 3TG66, 3TG72 Gasoline Engines Technical Service Repair Manual CTM12 - PDF

3TG66, 3TG72 Engines CTM12 

This comprehensive technical service repair manual covers all the information needed to service the John Deere Yanmar 3TG66 and 3TG72 Gasoline Engines. The detailed instructions are carefully written by experts with decades of experience in the the industry.

Make repairs to your John Deere Yanmar 3TG66 or 3TG72 Gasoline Engines with confidence using this comprehensive Technical Service Repair Manual. Developed by experts for technicians, this manual provides detailed, step-by-step directions for service and overhaul tasks.

Covered:
Yanmar 3TG66, 3TG72 Gasoline Engines

Contents:

Group 05— . . . . . . . . . . . . . . . . . . . . . . . . . .
About This Manual . . . . . . . . . . . . . . . . . . . 05-2
Engine Serial Number Plate . . . . . . . . . . . . . 05-3
Engine Application Chart . . . . . . . . . . . . . . . 05-3
Engine Torque Specifications . . . . . . . . . . . . 05-4
Metric Torque Specifications . . . . . . . . . . . . 05-5
Group 06—Repair Specifications
Engine
3TG72 . . . . . . . . . . . . . . . . . . . . . . . . . 06-1
3TG66 . . . . . . . . . . . . . . . . . . . . . . . . . 06-6
Group 10—Valve Train and Camshaft
Service Equipment and Tools . . . . . . . . . . . . 10-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 10-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 10-2
Rocker Arm
Remove and Disassemble Cover . . . . . . . . 10-2
Measure and Adjust Valve Clearance . . . . . 10-3
Remove and Disassemble Assembly . . . . . 10-4
Remove and Inspect Pushrods and
Cam Followers . . . . . . . . . . . . . . . . . . 10-7
Install Pushrods and Cam Followers . . . . . . 10-9
Assemble and Install Assembly . . . . . . . . 10-10
Assemble and Install Cover . . . . . . . . . . 10-11
Camshaft
Remove . . . . . . . . . . . . . . . . . . . . . . . 10-12
Disassemble and Inspect . . . . . . . . . . . . 10-14
Assemble . . . . . . . . . . . . . . . . . . . . . . 10-18
Install . . . . . . . . . . . . . . . . . . . . . . . . . 10-18
Group 15—Cylinder Head, Valves, and Manifolds
Essential Tools . . . . . . . . . . . . . . . . . . . . . 15-1
Service Equipment and Tools . . . . . . . . . . . . 15-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 15-1
Exhaust Manifold
Remove, Repair, and Install . . . . . . . . . . . 15-2
Intake Manifold
Remove, Repair, and Install . . . . . . . . . . . 15-3

Cylinder
Remove . . . . . . . . . . . . . . . . . . . . . . . . 15-4
Disassemble . . . . . . . . . . . . . . . . . . . . . 15-5
Assemble . . . . . . . . . . . . . . . . . . . . . . 15-10
Install . . . . . . . . . . . . . . . . . . . . . . . . . 15-13
Group 20—Flywheel
Service Equipment and Tools . . . . . . . . . . . . 20-1
Flywheel Housing and Flywheel
Remove . . . . . . . . . . . . . . . . . . . . . . . . 20-1
Inspect . . . . . . . . . . . . . . . . . . . . . . . . . 20-3
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 20-3
Group 25—Connecting Rods and Pistons
Service Equipment and Tools . . . . . . . . . . . . 25-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 25-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 25-1
Connecting Rod
Measure Side Play . . . . . . . . . . . . . . . . . 25-2
Measure Bearing Clearance . . . . . . . . . . . 25-2
Pistons and Connecting Rods
Remove . . . . . . . . . . . . . . . . . . . . . . . . 25-4
Inspect . . . . . . . . . . . . . . . . . . . . . . . . . 25-6
Deglaze Cylinder Bores . . . . . . . . . . . . . 25-13
Assemble . . . . . . . . . . . . . . . . . . . . . . 25-14
Install . . . . . . . . . . . . . . . . . . . . . . . . . 25-16
Group 30—Crankshaft and Main Bearings
Service Equipment and Tools . . . . . . . . . . . . 30-1
Service Part Kits . . . . . . . . . . . . . . . . . . . . 30-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 30-1
Measure Crankshaft End Play . . . . . . . . . . . 30-2
Measure Crankshaft Bearing Clearance . . . . . 30-2
Crankshaft Oil Seal
Remove . . . . . . . . . . . . . . . . . . . . . . . . 30-5
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 30-6
Crankshaft
Remove . . . . . . . . . . . . . . . . . . . . . . . . 30-7
Disassemble and Inspect . . . . . . . . . . . . . 30-9

Crankshaft—Continued
Assemble . . . . . . . . . . . . . . . . . . . . . . 30-12
Install . . . . . . . . . . . . . . . . . . . . . . . . . 30-12
Group 35—Gear Housing
Service Equipment and Tools . . . . . . . . . . . . 35-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 35-1
Timing Gear Cover
Remove . . . . . . . . . . . . . . . . . . . . . . . . 35-2
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 35-3
Timing Gears
Remove and Inspect . . . . . . . . . . . . . . . . 35-4
Install Timing Gears . . . . . . . . . . . . . . . . . . 35-5
Gear Housing
Remove . . . . . . . . . . . . . . . . . . . . . . . . 35-6
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 35-7
Group 40—Lubrication System
Service Equipment and Tools . . . . . . . . . . . . 40-1
Other Materials . . . . . . . . . . . . . . . . . . . . . 40-1
Oil Pump
Remove and Inspect . . . . . . . . . . . . . . . . 40-2
Assemble and Install . . . . . . . . . . . . . . . . 40-3
Oil Pressure Regulating Valve
Remove and Install . . . . . . . . . . . . . . . . . 40-4
Adjust . . . . . . . . . . . . . . . . . . . . . . . . . . 40-5
Group 45—Cooling System
Essential Tools . . . . . . . . . . . . . . . . . . . . . 45-1
Service Equipment and Tools . . . . . . . . . . . . 45-1
Thermostat
Service . . . . . . . . . . . . . . . . . . . . . . . . . 45-2
Water Pump
Remove . . . . . . . . . . . . . . . . . . . . . . . . 45-3
Disassemble . . . . . . . . . . . . . . . . . . . . . 45-3
Assemble . . . . . . . . . . . . . . . . . . . . . . . 45-6
Install . . . . . . . . . . . . . . . . . . . . . . . . . . 45-8
Group 50—Carburetor
Carburetor
Remove and Install . . . . . . . . . . . . . . . . . 50-1
Clean . . . . . . . . . . . . . . . . . . . . . . . . . . 50-4
Assemble . . . . . . . . . . . . . . . . . . . . . . . 50-5
Group 55—Governor
Service Equipment and Tools . . . . . . . . . . . . 55-1
Governor
Remove and Inspect . . . . . . . . . . . . . . . . 55-1
Assemble and Install . . . . . . . . . . . . . . . . 55-5

Group 60—Starter
Service Equipment and Tools . . . . . . . . . . . . 60-1
Starter Specifications . . . . . . . . . . . . . . . . . 60-1
Starter Application Chart . . . . . . . . . . . . . . . 60-1
Bench Test Starter . . . . . . . . . . . . . . . . . . . 60-2
Starter Hitachi 0.8 kW
Disassemble and Service . . . . . . . . . . . . . 60-3
Assemble . . . . . . . . . . . . . . . . . . . . . . . 60-7
Nippon Denso 1.0 kW Starter
Disassemble and Service . . . . . . . . . . . . . 60-8
Assemble . . . . . . . . . . . . . . . . . . . . . . 60-15
Group 65—Alternator
Service Equipment and Tools . . . . . . . . . . . . 65-1
Alternator Specifications . . . . . . . . . . . . . . . 65-1
Service 20 A Kokosan Alternator . . . . . . . . . 65-1
Nippon Denso Alternator
Replace Voltage Regulator . . . . . . . . . . . . 65-4
Disassemble . . . . . . . . . . . . . . . . . . . . . 65-6
Test Rotor . . . . . . . . . . . . . . . . . . . . . . . 65-7
Test Stator and Rectifier . . . . . . . . . . . . . 65-9
Assemble . . . . . . . . . . . . . . . . . . . . . . 65-12
Group 70—Ignition System
Service Ignition Coils . . . . . . . . . . . . . . . . . 70-1
Service Ignition Pulsers . . . . . . . . . . . . . . . . 70-2

Total Pages: 172
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